Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e4f638ef491ffd…

MALICIOUS

PDF

46.8 KB Created: 2021-06-08 21:19:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ec39906bd27e534183734e261a3fc7e9 SHA-1: ad64492e35c4e6d030c70612eae13bede9a5914e SHA-256: e2e4f638ef491ffd4f70cc40384753a66d33250ba99ee4063a29b79a899cf608
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and 'game hacks', directing users to a suspicious URL. This URL is identified as a redirector for potentially malicious content. While no scripts were directly extracted, the PDF structure and embedded URI strongly suggest an attempt to lead the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.tw/app/431946152/free-robux-no-verification-or-offers-game-hack PDF link annotation
    • https://www.romedia.gr/images/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/github-script-cheat-stc-lua-roblox_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://www.romedia.gr/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f8a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F8A 24928 bytes
SHA-256: 60f0d7cd7fb1811785eec379cd454ee70cd7adfcfe5ab5ecd97cd91ecbd39971
font_01_sfnt_off000088d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D4 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off000092e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92E3 18600 bytes
SHA-256: 47d821c3ae5b20fc578b85b0863e1c3b8ef195add9b037da52857b16119276ad

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